Variations in the color of kibble are not unusual. Here is how Fromm explains it:
https://www.frommfamily.com/about/question-and-answer/products/kibble-color/
We choose not to use artificial colors or dyes in our products. The color of our foods is dependent upon the natural color of the ingredients that we use. Depending on factors such as the time of year or where ingredients were sourced, the color of a specific recipe may vary from batch to batch. This variation in no way impacts the quality or nutritional value of the product.
